TW200736650A - Cold start satellite search method - Google Patents

Cold start satellite search method

Info

Publication number
TW200736650A
TW200736650A TW095149841A TW95149841A TW200736650A TW 200736650 A TW200736650 A TW 200736650A TW 095149841 A TW095149841 A TW 095149841A TW 95149841 A TW95149841 A TW 95149841A TW 200736650 A TW200736650 A TW 200736650A
Authority
TW
Taiwan
Prior art keywords
satellite
cold start
searching
satellites
search method
Prior art date
Application number
TW095149841A
Other languages
Chinese (zh)
Other versions
TWI346791B (en
Inventor
Kun-Tso Chen
Kung-Shuan Huang
Original Assignee
Mediatek Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mediatek Inc filed Critical Mediatek Inc
Publication of TW200736650A publication Critical patent/TW200736650A/en
Application granted granted Critical
Publication of TWI346791B publication Critical patent/TWI346791B/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
    • G01S19/28—Satellite selection

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

A method for searching satellites in a cold start state. The method of the present invention, a first satellite, which is predetermined or randomly selected, is searched. Then, a second satellite to be searched is selected according to the searching result (hit or missed) for the first satellite and respective interrelationships between the first satellite and the other satellites. In practice, an initial weight factor table is provided. Depending on the searching result, the initial weight factor table is updated according to the interrelationships between the satellites during searching. By using the method of the present invention, the time-to-first-fix (TTFF) can be reduced to a shorter period of time so as to provide a rapid cold start satellite positioning.
TW095149841A 2006-03-28 2006-12-29 Cold start satellite search method TWI346791B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/392,976 US7612714B2 (en) 2006-03-28 2006-03-28 Satellite search method

Publications (2)

Publication Number Publication Date
TW200736650A true TW200736650A (en) 2007-10-01
TWI346791B TWI346791B (en) 2011-08-11

Family

ID=38514711

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095149841A TWI346791B (en) 2006-03-28 2006-12-29 Cold start satellite search method

Country Status (4)

Country Link
US (2) US7612714B2 (en)
CN (1) CN101067653B (en)
DE (1) DE102006032777B4 (en)
TW (1) TWI346791B (en)

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EP2157440B1 (en) * 2008-08-21 2012-04-25 Samsung Electronics Co., Ltd. Method for acquiring a signal of a satellite
US20100141523A1 (en) * 2008-12-09 2010-06-10 Qualcomm Incorporated Satellite positioning system signal searching methods and apparatuses
TW201030362A (en) * 2009-02-09 2010-08-16 Univ Nat Taiwan Method for implementing GPS surveying field work planning using 3D topographic information and method for analyzing 3D topographic information
US20120249369A1 (en) * 2010-12-14 2012-10-04 Qualcomm Incorporated Quasi-cold start satellite vehicle search method and system
EP2574952B1 (en) * 2011-09-30 2016-05-11 u-blox AG Position Validation
CN102565823B (en) * 2011-12-15 2013-10-09 深圳市中兴移动通信有限公司 Quick starting method of GPS (Global Position System) receiver and cooperative GPS receiver system
US9121937B2 (en) 2011-12-29 2015-09-01 Google Technology Holdings LLC Method and apparatus for tracking a global navigation satellite system within the constraints of an indoor facility
CN103376453A (en) * 2012-04-27 2013-10-30 厦门雅迅网络股份有限公司 Locater quick starting method in navigation system
CN102901972A (en) * 2012-08-23 2013-01-30 上海交通大学 Beidou satellite searching device and searching method thereof
US9720091B2 (en) 2014-06-30 2017-08-01 Honeywell International Inc. Adaptive satellite search succession
US10845487B2 (en) * 2017-06-13 2020-11-24 Microsoft Technology Licensing, Llc Acquisition in global navigation satellite systems based on previously acquired satellites
CN110146903B (en) * 2019-05-24 2020-11-13 国网浙江省电力有限公司信息通信分公司 Particle swarm Beidou satellite selection method based on feedback adjustment of inertial weight

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Also Published As

Publication number Publication date
US20100007556A1 (en) 2010-01-14
CN101067653B (en) 2011-12-28
US7612714B2 (en) 2009-11-03
DE102006032777B4 (en) 2012-08-23
US20070229351A1 (en) 2007-10-04
DE102006032777A1 (en) 2007-10-18
CN101067653A (en) 2007-11-07
TWI346791B (en) 2011-08-11
US7796084B2 (en) 2010-09-14

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees